A tourist takes a rest at a park in Shanghai, east China, March 22, 2020. (Xinhua/Zhang Jiansong)

A tourist takes pictures of flowers at a park in Shanghai, east China, March 22, 2020. (Xinhua/Zhang Jiansong)

Photo taken on March 22, 2020 shows spring scenery of a park in Shanghai, east China, March 22, 2020. (Xinhua/Zhang Jiansong)

A tourist takes pictures under a cherry tree at a park in Shanghai, east China, March 22, 2020. (Xinhua/Zhang Jiansong)